[Backport 7.x] Support pip freeze URL format #9311
Merged
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pip freeze
(https://pip.pypa.io/en/stable/cli/pip_freeze/) "outputs installed packages in requirements format"(https://pip.pypa.io/en/stable/reference/requirement-specifiers/). As of pip 19.1, pip also supports specifying a requirement as a URL, and, for packages that were installed using URL format,
pip freeze
will output package requirements in URL format.However, Puppet's
pip freeze
parser doesn't support URL format, so it doesn't realize that a package is installed if it uses URL format, causing everypuppet agent
run to attempt to reinstall the package.This PR adds support for parsing
pip freeze
URL format.(cherry picked from commit 207a7dc)
Backport: #9280